One more thing, you probably see those fancy tags after some users names like 'D1 Runner' or 'EMT'. If you're an elite runner looking for recognition or have something of use for the community, click here to apply!.

I had really bad lower back pain when I started running, turns out my hamstrings were WAY too tight and pulling on it all, now I just make sure to stretch my hamstrings 3x after running, 20 seconds per stretch, and I have no problems.

Yeah definitely. At first I tried things to target my lower back, like cat stretches and child's pose and most of it did nothing, really. I'd wake up in the night with back pain! I randomly read something that said it could be the hamstrings, spend like 10 minutes stretching them once I heard that, and bam! No more problems. What I recommend to really get the hamstrings and lower back is to sit down with your legs ahead, grab your toes, it doesn't matter if you have to bend your knees (in fact I find it helps to bend them slightly) and keep your back COMPLETELY straight while you bend at the hips forward. You should feel it all along your hamstrings and lower back.